Ask Warning: ftp_put () [function. ftp-put]: OpeningBINARYmodedataconnection

Could you tell me the error message "Warning: ftp_put () [function. ftp-put]: OpeningBINARYmodedataconnection"? why ?, This is an example in the PHP manual and also your answer Here 'saquickfunctionthatfiguresoutth could you tell me Warning: ftp_put () [function. ftp-put]: Opening BINARY mode data connection
Please refer to the error message for the question purpose. why?

------ Solution --------------------
This is an example in the PHP manual and your answer.

Here's a quick function that figures out the correct mode to use based on a file's extension.

Function get_ftp_mode ($ file)
{
$ Path_parts = pathinfo ($ file );

If (! Isset ($ path_parts ['extension']) return FTP_BINARY;
Switch (strtolower ($ path_parts ['extension']) {
Case 'am': case 'asp ': case 'bat': case 'C': case 'cfm': case 'CGI ': case 'conf ':
Case 'cpp ': case 'css': case 'dhtml ': case 'diz': case 'H': case 'hpp': case 'htm ':
Case 'html': case 'in': case 'INC': case 'js': case 'M4 ': case 'mak': case 'nfs ':
Case 'nsi': case 'Pa': case 'Patch ': case 'php': case 'php3': case 'php4 ': case 'php5 ':
Case 'phpml': case 'pl': case 'Po': case 'py': case 'qmail': case 'sh': case 'shtml ':
Case 'SQL': case 'tcl ': case 'tpl': case 'txt ': case 'vbs': case 'xml': case 'xrc ':
Return FTP_ASCII;
}
Return FTP_BINARY;
}

// Sample usage
Ftp_get ($ conn_id, $ local_file, $ server_file, get_ftp_mode ($ server_file ));
?>
------ Solution --------------------
Are you using the binary mode?
------ Solution --------------------
The server is usually placed behind the firewall. Therefore, if the FTP client program needs to traverse the firewall, the passive mode must be enabled. otherwise, no ftp command is returned when it is executed, until a fatal error of "maximum execution time timeout" occurs, causing the program to stop running...

Solution, can refer to: http://www.bacysoft.cn/thread-10-1-1.html